M. YAHYA, O.; A. AHMED, B.; THANOON, I. Ultrasound-assisted one-pot synthesis of dihydropyrimid-2-one/thiones catalyzed by zirconyl chloride hexahydrate. Journal of Education and Science (JES), [S. l.], v. 26, n. 5, p. 154–159, 2013. DOI: 10.33899/edusj.2013.163065. Disponível em: https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23216. Acesso em: 6 aug. 2025.